A man gave 25% to wife, 20% of remainder to son, 25% of remainder to daughter, rest Rs. 9000 to charity. Total amount: MCQ with Answer and Explanation

A man gave 25% to wife, 20% of remainder to son, 25% of remainder to daughter, rest Rs. 9000 to charity. Total amount:

A. 24000

B. 20000

C. 22000

D. 18000

Answer: Option B

Wife 25%, left 75%. Son 20% of 75%=15%, left 60%. Daughter 25% of 60%=15%, left 45% = 9000 → total = 20000.

This question belongs to: Maths Percentage

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Question #1 Report Error

After spending 85% of his income, a man saves Rs. 4500. His income is:

A. 30000

B. 32000

C. 28000

D. 25000

Correct Answer: Option A

Explanation:
Savings 15% = 4500, income = 4500/0.15 = 30000.

This question belongs to: Maths Percentage

Question #2 Report Error

A person measured a line as 5.05 cm instead of its true length of 5.00 cm. What is the percentage error?

A. 2%

B. 1%

C. 1.5%

D. 0.5%

Correct Answer: Option B

Explanation:
Error = 5.05 - 5.00 = 0.05. % Error = (0.05 / 5.00) * 100 = 1%.

This question belongs to: Maths Percentage

Question #3 Report Error

Find the single equivalent discount for successive discounts of 10% and 20%.

A. 28%

B. 25%

C. 30%

D. 32%

Correct Answer: Option A

Explanation:
Equivalent discount = a + b - (ab / 100). 10 + 20 - (10 * 20 / 100) = 30 - 2 = 28%.

This question belongs to: Maths Percentage